The Damper,flue, cataloged under National Stock Number 4520-01-191-6172, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is L.m. Gill Welding & Manufacturing, L.l.c. Dba Lm Gill Welding & Manufacturing Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Damper,flue |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Manufacturers | L.m. Gill Welding & Manufacturing, L.l.c. Dba Lm Gill Welding & Manufacturing Llc (CAGE 2N865) |
| Parameter | Value |
|---|---|
| NSN | 4520-01-191-6172 |
| Primary Part Number | 87643-2232-F58 |
| Item Name | Damper,flue |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | L.m. Gill Welding & Manufacturing, L.l.c. Dba Lm Gill Welding & Manufacturing Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 87643-2232-F58 PRIMARY | L.m. Gill Welding & Manufacturing, L.l.c. Dba Lm Gill Welding & Manufacturing Llc (USA) |
| Reference | Meaning |
|---|---|
| 501-4675189F58 | 5/2 Secondary reference U.S. Government activity |
| 501-4675189 | D/9 Drawing number reference only U.S. Government activity |
| 87643-2232ITF-58 | 5/2 Secondary reference U.S. Government activity |
NSN 4520-01-191-6172 is a Damper,flue, manufactured by L.m. Gill Welding & Manufacturing, L.l.c. Dba Lm Gill Welding & Manufacturing Llc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-191-6172 has 1 manufacturer part number on file: 87643-2232-F58 (L.m. Gill Welding & Manufacturing, L.l.c. Dba Lm Gill Welding & Manufacturing Llc).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.